GB1206402A - Improvements in or relating to intermeshing gears in gear pumps - Google Patents

Improvements in or relating to intermeshing gears in gear pumps

Info

Publication number
GB1206402A
GB1206402A GB54693/66A GB5469366A GB1206402A GB 1206402 A GB1206402 A GB 1206402A GB 54693/66 A GB54693/66 A GB 54693/66A GB 5469366 A GB5469366 A GB 5469366A GB 1206402 A GB1206402 A GB 1206402A
Authority
GB
United Kingdom
Prior art keywords
gear
tooth
driver
teeth
driven
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB54693/66A
Inventor
Robert Spurgeon Wood
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Plessey Co Ltd
Original Assignee
Plessey Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Plessey Co Ltd filed Critical Plessey Co Ltd
Priority to GB54693/66A priority Critical patent/GB1206402A/en
Priority to US686885A priority patent/US3469531A/en
Priority to FR131147A priority patent/FR1546379A/en
Priority to DE19671653885 priority patent/DE1653885A1/en
Publication of GB1206402A publication Critical patent/GB1206402A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2/00—Rotary-piston machines or pumps
    • F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C2/082—Details specially related to intermeshing engagement type machines or pumps
    • F04C2/084—Toothed wheels

Abstract

1,206,402. Gear-pumps. PLESSEY CO. Ltd. Nov.27, 1967 [Dec.7, 1966], No.54693/66. Heading F1F. In a gear-pump having intermeshing driver and driven gears, the tooth profiles of at least one of said gears is relieved in the portions coming into operation towards the end of the engagement as compared with the standard tooth profiles. As show, the driver gear 3 rotating in the direction of the arrow is relieved along the leading flank of each tooth from a point b at which a tooth makes initial engagement with a tooth of the driver given (see teeth 3a, 4a) to its tip. Owing to the elasticity of the gear teeth the transmission of torque from the driver gear 3 to the driven gear 4 will result in restoring contact between the two preceding teeth (3b, 4b). The consequence of this is that the root of the leading flank of a driver tooth and the tip of the trailing flank of a driven tooth receive additional wear whilst the tip of the leading flank of a driver tooth and the root of the trailing flank of a driven tooth receive less wear resulting in equalization of wear and longer tooth life. Preferably the relief of the tip portion of the teeth of the driving gear is effected on both flanks; this enables a reversible housing as described in Specification 1,052,238 to be used. This housing when reversed substitutes the engagement of the hitherto trailing flank of the driver gear and leading flank of the driven gear as the new leading and trailing flanks respectively, to double the life of the teeth. The root of the trailing flank of the driven gear may be relieved instead of the tip of the leading flank of the driver gear.
GB54693/66A 1966-12-07 1966-12-07 Improvements in or relating to intermeshing gears in gear pumps Expired GB1206402A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
GB54693/66A GB1206402A (en) 1966-12-07 1966-12-07 Improvements in or relating to intermeshing gears in gear pumps
US686885A US3469531A (en) 1966-12-07 1967-11-30 Intermeshing gears,more particularly in gear pumps
FR131147A FR1546379A (en) 1966-12-07 1967-12-06 Gear pump
DE19671653885 DE1653885A1 (en) 1966-12-07 1967-12-06 Gear pump

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB54693/66A GB1206402A (en) 1966-12-07 1966-12-07 Improvements in or relating to intermeshing gears in gear pumps

Publications (1)

Publication Number Publication Date
GB1206402A true GB1206402A (en) 1970-09-23

Family

ID=10471801

Family Applications (1)

Application Number Title Priority Date Filing Date
GB54693/66A Expired GB1206402A (en) 1966-12-07 1966-12-07 Improvements in or relating to intermeshing gears in gear pumps

Country Status (3)

Country Link
US (1) US3469531A (en)
DE (1) DE1653885A1 (en)
GB (1) GB1206402A (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3881365A (en) * 1974-04-01 1975-05-06 Gen Motors Corp Gearing
US5135373A (en) * 1990-11-01 1992-08-04 Stackpole Limited Spur gear with epi-cycloidal and hypo-cycloidal tooth shapes
DE4138913C1 (en) * 1991-11-27 1993-06-09 John S. Barnes Gmbh, 8670 Hof, De
US8137085B2 (en) * 2008-12-18 2012-03-20 Hamilton Sundstrand Corporation Gear pump with slots in teeth to reduce cavitation
CN115289007B (en) * 2022-08-25 2024-01-30 上海电机学院 No-dilemma involute gear unloading structure

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1701222A (en) * 1927-04-15 1929-02-05 Belati Umberto Gear members
US1895360A (en) * 1930-02-17 1933-01-24 Wildhaber Ernest Gearing
US1976227A (en) * 1931-03-20 1934-10-09 Brown & Sharpe Mfg Gear pump
US2601003A (en) * 1946-05-17 1952-06-17 Bendix Aviat Corp Gear pump

Also Published As

Publication number Publication date
US3469531A (en) 1969-09-30
DE1653885A1 (en) 1971-09-16

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees